Water-closet valve



- T. MGHUGH. WATER GALOSET VALVE.V

(No Modem Patented IIII Ill

UNITED .STATES PATENT OFFCTE.

TIlVIOTI-IYll/ICHUGH, OF CAMBRIDGE, ASSIGNOB` TO HIMSELF, ANI) TARD StCURLEY, OF BOSTON, MASSACHUSETTS.

WATER-eLosET v-ALvE.

SPECIFICATION forming part of Letters Patent No. 280,648, dated July 3,1883.

Application filed February 19, 1893.

To all whom t'tmn/y concern:

Be it known that l, TIMOTHY MCHUGH, of Cambridge, in the county ofMiddlesex-and State of Massachusetts, have invented -certainImprovements in Water Closet Valves, of

which the following is a specification.

This invention relates to that class of water-closet valves which areoperated automatically by a connection with the closet seat or door, andin which the first action caused by the depression of the closet-seat orthe opening of the door is a briet opening of the passage through thevalve to cause a brief flow of water called the first wash,7 then aclosing of said passage until the closet-seat is released or the dooragain opened, when the passage is again opened and water is allowed toflow for alonger period, the passage being finally closed automatically.

My invention has for its object to provide a simple, durable, andefcient valve of this class, and to this end it consists in theimprovements which I will now proceed to describe.

Of the accompanying drawings, forming a part of this specification,Figures l and 2 represent vertical central sections of my improvedvalve, showing the saine in different parts of the operations. Fig. 3represents a section on line r m, Fig. l.

In the drawings, c represents the cylindrical casing' of my improvedvalve, the same having a ring, b, at its upper end, 'an external ange orshoulder, c, adapted to rest on the bottom of thetank, in which thevalve is placed, and a threaded n eck, d, at itslower end adapted to becoupled to a pipe which conducts water to the bowl or hopper of thecloset. The upper edge of the ring b constitutes avalve-seat,

4o 2, and its lower edge a valve-seat, 3, and when both of said seatsare uncovered a clear passage exists through the casing, through whichwatercan flow downwardly through the casing, the water entering at theupper end of 45 the ring b and escaping through the neck d.

Vithin the casin g a, and rigidly attached thereto by arms e, is acylindrical cup or chamber,

e, open at its top, and provided with a bottom,

which has an adjustable screw, f, having a 5o water chamber orvent,j",which can be opened or closed by turning said screw in or'out.

(No model.)

' g represents a valve stem or rod adapted to slide vertically in aguide, 7L, attached to thc ring b, and provided above said ring with aweighted valve, fi, adapted to rest on the seat 2, and below said ringwith a valve, 7' adapted to bear against the seat 3 when said stem is fraised.

At the lower end of the stein r/ is a piston,

' k, fitting somewhat closely the interior of the 6o chamber e.

In the center of the piston k is an opening, n.

Z represents a valve, which bears against the openin'g n from the underside ofthe valve and closes the same when the piston is movingdownwardly against a body of water in the chamber e. /Vhen the piston isat rest in the depressed position shown in Fig. l, the valve Z drops byits own weight upon a support, m, and leaves the opening 4n uncovered.

u represents an overflow pipe extending from the lower part of thecasing a to a suitable elevated point in the tank.

The operation is as follows: The valve-stein g is connected by anysuitable means with a part of the closet-for example, the seatthereof-so that when the seat is depressed by the weight of a sitter thestem will be raised from its normal position shown in Fig. 1 to theposition shown in Fig. 2. By this movement the 8o valve Ai is raisedfrom its seat, and water is allowed to flow through the ring b anddownwardly through the casing while the valvestem is rising and untilthe lower valve, j, reaches the seat 3 and obstructs the passage 85through the casing. The water that flows during the upward movement ofthe valve-stem is technically known as the first wash,7 because itwashes or wets the bowl of the closet before said bowl is use d. Thevalve-stem and 9o its valves remain in the elevated position (shown inFig. 2) until the seat of the closet is released by the rising ofthesitter, and while the valve-stem remains elevated the water continues toiiow in small quantities through an 9 5 orifice, p, in the valvej uponthe piston k and through the opening a of the latter into the chamber e,the valve Z resting at this time on the support m, and leaving saidopening unobstructed. The chamber e is thus filled with. Ico water whilethe valve-stem is elevated. Vhen the closet-seat is released, thevalve-stem commences to move downwardly, and removes the valve i fromthe seat 3, thus again opening the passage through the casing andallowing rater to iow. The descent ofthe valve-stem is retarded by thewater in the chamber e, which presses against and closes the valve Z, asshown in Fig. 2, and escapes slowly through the vent j" in the screw j'.The water is allowed to flow through the casing during the downwardmovement of the valve-stein until the valve `i reaches the seat 2 andobstructs the passage through the casing. The water that passes throughthe casing at this time is known as the second wash,77 and its durationis regulated by the screw f, which, when screwed into the bottom of thechamber c, decreases the size of the vent j', and when screwed outwardlyincreases the size ofthe vent. This regulating of the duration ofthesecond wash is a feature of much importance.

I do not limit myself in all cases to the eniployment of avent in thebottom ofthe chamber e, for it is obvious that if no such vent wereemployed the water below the piston would escape upwardly between theperiphery of the piston and the inner surface ofthe chamber if thepist-on were not too closely fitted. I prefer the vent, however, asabove described.

The valve j is placed loosely on the stem g, and is supported by aspring, s, so that when the stem g is raised quickly the-valve 7' willyiel d and prevent a liar when it strikes its seat.

l. The casing having the valve-seais 2 and the chamber c, combined withthe valvestem g, having the valves j and the valved piston lc, allarranged and operated substantially as described.

2. The combination ofthe casing having the two valve-seats 2 3, thepiston lc, carrying on its stem the valves fi j, and the chamber orreceptacle e, located under said piston, adapted to receive water whenthe piston is raised, and provided with an adjustable vent in its bottomwhereby the escape of water from the chamber, and consequently the rateof descent oi' the valve-stem and the duration ofthe second wash, areregulated, as set forth.

3. The combination of the casing having the valveseats 2 3, and chambere, the valved piston 7.1, havingthe stem g, the valve/1J, supported bythe stem g, and the valvej, also supported by the stem g, and providedwith an orifice, j), whereby the chamber e is supplied with water whenthe valve-stem. is raised, as set i'orth.

In testimony whereof I have signed my name to this specification, in thepresence oi'two sub scribing witnesses, this 15th day ci" lilelnuary,1883.

TIMOTHY M( HUG H.

Vitnesscs:

THos. CURLY, (l. F. BROWN.

